tools/include/nolibc/errno.h

   1 /* SPDX-License-Identifier: LGPL-2.1 OR MIT */
   2 /*
   3  * Minimal errno definitions for NOLIBC
   4  * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
   5  */
   6
   7 #ifndef _NOLIBC_ERRNO_H
   8 #define _NOLIBC_ERRNO_H
   9
  10 #include <asm/errno.h>
  11
  12 #ifndef NOLIBC_IGNORE_ERRNO
  13 #define SET_ERRNO(v) do { errno = (v); } while (0)
  14 int errno __attribute__((weak));
  15 #else
  16 #define SET_ERRNO(v) do { } while (0)
  17 #endif
  18
  19
  20 /* errno codes all ensure that they will not conflict with a valid pointer
  21  * because they all correspond to the highest addressable memory page.
  22  */
  23 #define MAX_ERRNO 4095
  24
  25 /* make sure to include all global symbols */
  26 #include "nolibc.h"
  27
  28 #endif /* _NOLIBC_ERRNO_H */